Air-cooled damper



Nov. 15, 1927. 1,649,749

J. E. SHOOK AIR COOLED DAMPER Filed Sept. 29. 1926 3 Sheets-Sheet 1 0 I i b I\ I N N "T W gwoentoz Nov. 15, 1927. 1,649,749

J. E. SHOOK AIR COOLED DAMPER Filed Sept. 29. 1926' 3 Sheets-Sheet 3 gwwmtoz Patented Nov. 15, 1 927. 7

UNITED STATES PATENT OFFICE.

JOHN E. SHOOK, OF PITTSBURGH, PENNSYLVANIA.

.AIR-GOOLED DAMPER.

v Application filed September 29, 1926. Serial No. 138,391.

It has in view to provide an opening and.

closing damper or valve, adapted to be moved across a circulating opening and so constructed as to provide for air cooling of its main body portion, composed of refractor or heat resisting material. (lertain preferred embodiments of the nvention are shown in the accompanying drawings, in which: i

Fig. 1 is a partial horizontal sectional view through a flue, showing the application of the invention thereto, in closed position;

Fig. 2 is a vertical sectional view on the line IIII of Fig. 1;

Fig. 3 is a complete transverse sectional view on the line III-III of Fig. 2;

Fig. 4 is an enlarged sectional detail view, showing the construction of the damper body, partly broken away;

Fig. 5 is a sectional detall view, showing the roller support for the valve;

Fig. 6 is a cross section on the line VIVI of Fig. 5;

Fig. 7 is a sectional view similar to Fig. 2, showing a vertically arranged valve;

Fig. 8 is a similar view, showing the valve arranged at an incline.

Referring to the drawlngs, 2 represents the circulating area of a flue enclosed within the usual surrounding walls 3, of any standard construction, across which is located my improved damper for opening or closing the circulation.

The damper, in its entirety, comprlses a series of sections 4 of refractory material, as tile, in the shape of a fiat wall. The sections or units t are tightly connected by a series of longitudinally disposed pipes 5, a transverse series of larger pipes 6 at right angles thereto, with the intervening filling of the said refractory members 4 mounted thereon.

Pipes 6 are of substantially the same depth or thickness as the refractory material, and constitute air circulating framing members adapted to also act as keys to maintain the refractory material in continuous horizontal position.

For such purpose, the refractory units adjacent pipes 6 are concaved, as at 7, for fitting engagement against the pipes, the intervening units 4 being in flat abutting relation as shown.

At frequent intervals, preferably one for each transverse series of units, the pipes 5 extend from thefront to the rear, through the front pipe 6 and similar intervening PIPES, being tapped into the front wall of the rear pipe at 8.

Each of the several pipes 5 is thus utilized as a tension member, and is tightly held in position by one or more nuts 9 at the front, with an intervening Washer 10,"curved to fit the surface of the front pipe 6. The small connecting pipes 5 as thus arranged, also extend centrally through openings in each of the several blocks 4, as clearly shown, whereby all of such blocks in the entire series are thus maintained in tight compact arrangement and on the same general level.

The piping system as constructed constitutes an air circulating skeleton framework for the refractory body portion of the damper.

It will be obvious to those skilled in the art that the entire refractory filling may also be composed of any suitable cement or other plastic mixture, molded and hardened to final form around the pipes, with the same surface and other dimensions and proportions: In such case the top and bottom surfaces should be substantially flush with the tops and bottoms of the pipes 6 and with the smaller pipes completely enclosed.

At their several intersections with the larger pipes 6, the connecting pipes 5 'are provided with air circulating ports 11, and each pipe 6 is also provided with a. downwardly directed air circulating port 12 for each of such series and for communication with the rear end of the pipe 6, as in Fig. 4.

As thus constructed it will be seen that free communicationwith the outside atmosphere, from the front open ends of pipes 5 is provided, through the several pipes 6, with the suction side of flue 2.

At their outer ends pipes 6 are provided with ooncaved rollers 13 mounted on bearing spindles 14: secured in the ends of each pipe 6, for rolling mounting of the damper on suitable trackwa-ys, at each inner side of the flue. Such trackways are provided by pipe sections 15, supported inwardly of the flue walls in. any suitable manner, which pipes extend outwardly beyond the front wall of the flue a sufficient distance to support the damper when in open or partly open position.

6 by threaded connection as The supporting pipes 15 are open at their front ends, and are provided with air circulating ports 17 leading downwardly into the interior of the flue and providing for free inward circulation of air from the atmosphere. If desired, one or more additional similar pipes 18 may be located underneath the damper, mounted in the flue walls and extending outwardly in front thereof with suitable suporting brackets 19, for the same general purpose of providing sliding or rolling support for the damper.

The damper as a whole may be moved inwardly or outwardly by any suitable means. In the construction shown, I provide a rack 20. located along the inner side of one or both pipes 15 and held by suitable connections, for engagement by the pinion 21 of shaft 22.

The shaft is mounted in forwardly extending arms secured at each outer side of the main damper body for rotatable mounting of the shaft. It is provided with any suitable actuating mechanism as a. terminal grooved or sprocket wheel 24 for actuation by chain 25 to effect movement by the rack and pinion construction above noted.

For the purpose of protecting the rollers 13, an inwardly extending ledge 26, as of tile, may be arranged in the manner of a protecting coping at each side, underneath which the rollers may move Without destructive exposure to the heat.

By such construction and arrangement, it will be seen that the damper may be easily moved inwardly or outwardly to any desired position, through the clearance opening in the front wall of the flue, to locate it for control of the circulation, as will be readily understood.

lVhen closed, and subject to the draft of a stack or other corresponding suction, atmospheric air will be drawn inwardly through the several pipes 5 and downwardly through the ports of pipes 6, thereby instituting a continuous air circulation through the several pipe members, and through the entire body portion of the damper, at closely adjacent intervals. Similar circulation is offected through the track and supporting pipes 15 and 18, so that the entire structure and its carrying portions is maintained at a desirably low temperature, avoiding the destructive efiects of the hot gases.

It will be understood also that the application of the flue is not limited to a horizontal position, but that it may be inserted vertically edgewise across a horizontal flue or at any other intervening angle between a horizontal and vertical plane, as in Figs. 7 and 8. Also that proper shifting mechanism of any suitable kind may be employed, best adapted to the particular construction or arrangement employed.

vertically by any suitable means as chains 27 across the line opening 22 in suitable guid ing grooves or clearance openings 28. The tile members -lmay be of single or plural depth, perforated by the air cooling pipes 5 connecting the terminal cross pipes 6, and providing for air circulation through the endmost pipe by its ports 12 in the manner described.

\Vhen located at an incline, as in Fig. 8, the damper is preferably supported on trackway pipes 15 laid along the opposite sides of the line walls, and operating as supporting guides for the cross pipes 6 or their terminal rollers as in the principal figures above described.

The advantages of the construction reside in its comparative simplicity and economy, with immediate automatic cooling action whenever the damper is in a position exposing it to the action of hot gases and inductive circulation. It is entirely unnecessary to maintain any fluid circulation connections, so that its construction and operation is comparatively simple, witha high degree of efficiency and greatly increased time of use.

What I claim is:

1. A flue damper consisting of a flat body of refractory material, and a supporting air circulation framework of pipes therefor entirely within the area defined between the opposite faces of the damper.

2. A flue damper consisting of a flat body of refractory material, and a supporting air circulation framework of pipes therefor having endwise air inlet openings and air outlet openings through one face of the damper.

8. A flue damper consisting of a frame composed of a plurality of pipes having air circulation ports at one side of the damper and in the plane of one face thereof, a series of transversely arranged connecting pipes therefor entirely within the area defined between the opposite faces of the damper open at one end and in circulating communication with said first named pipes, and a body portion of refractory material mounted upon said frame.

4. A flue damper consisting of a frame composed of a plurality of pipes having air circulation ports at one side, a series of transversely arranged connecting pipes therefor open at one end and in circulating communication with said first named pipes, 11 body portion of refractory material mounted upon said frame, and means for movably supporting the damper.

5. A flue damper consisting of a frame composed of a plurality of pipes having air circulation ports at one side, a series of transversely arranged connecting pi therefor open at one end and in circulating communication with said first named pipes,

In Fig. 7 the damper is raised and lowered a body portion of refractory material mounted upon said frame, and means for movably supporting the damper and for moving it to different positions.

6. A flue damper consisting of a frame composed of a plurality of pipes having air circulation ports at one side, a series of transversely arranged connecting pipes therefor open at one end and in circulating communication with said first named pipes, and a body portion of refractory material consisting of abutting sections of tile or the like surrounding and in 'edgewise engagement with said pipes.

7. The combination with a flue structure having supporting tracks at each opposite side, of a framework composed of a plural-' ity of laterally ported pipes having terminal rollers on said tracks, a series of smaller open ended pipes connecting said pipes and in circulating communication therewith, and a body portion of refractory material incorporated with and tightly held by said pipe framework.

8. The combination with a flue structure having supporting tracks at each opposite side consisting of air circulating ported pipes, of a framework composed of a plurality of laterally ported pi es having terminal rollers on said trac s, a series of smaller open ended pipes connecting said pipes and in circulating communication therewith, and a body portion of refractory material incorporated with and tightly held by said pipe framework.

9. The combination with a flue structure having supporting tracks at each opposite side, of a framework composed of a plurality of laterally ported pipes having terminal rollers on said tracks, a series of smaller open ended pipes connecting said pipes and in circulating communication therewith, a body portion of refractory material incorporated with and tightly held by said pipe framework, and means for moving said structure along said tracks to close or open the circulation through the flue.

10. The combination with a series of units of refractory material, of a plurality of spaced pipes having circulation ports at one side and in interlocking channelled connection with adjacent units, a series of smaller pipes extending through and connecting said several pipes and in ported circulation therewith, said smaller pipes extending through the units and opening to the atmosphere at one end.

11. The combination with a series of units of refractory material, of a plurality of spaced pipes having circulation ports at one side and in interlocking channeled connection with adjacent units, a series of smaller pipes extending through and connecting said several pipes and in ported circulation therewith, said: smaller. pipes extending through the units and opening to the atmosphere at one end and having securing and tightening nuts at said end.

In testimony whereof I hereunto afiix my signature.

JOHN E. SHOOK. 

